I have a 64 core and 48 core system running these projects occasionally. While I realize their reported "time left" is usually way off, the project still consumes 100% of the CPU cores while it does the projects that can take up to a day or more to complete.

I wish to limit the number of cores the project can use to around 8 or 16 cores so other projects can still run concurrently with it.

Well I think it is working after all. Shortly after making this post I decided to see how much CPU the task was utilizing and it's claiming that it's only using 800% of the CPUs which in linux = 8 cores @ 100%.

Yup, looks correct so far.
Been a while since somebody asked that, but when that happens I always refer to a post I made years ago like this. Maybe we should make a sticky for it that everyone can look at?
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